Oil or gas treatment fluid containing a chelate or coordination complex that sets

Abstract

A treatment fluid comprises: a metal oxide, wherein the metal oxide is capable of forming a chelate complex or coordination complex with a ligand, wherein the chelate complex or coordination complex has a setting time of less than 90 minutes at a temperature of 71° F. and a pressure of 1 atmosphere. A method of treating a portion of a subterranean formation comprises: introducing the treatment fluid into the subterranean formation; allowing or causing a chelate complex or coordination complex to form between the metal oxide and a ligand; and allowing or causing the chelate complex or coordination complex to set.

What is claimed is: 
     
       1. A method of treating a portion of a subterranean formation comprising:
 introducing a treatment fluid into the subterranean formation, wherein the treatment fluid comprises a metal oxide; 
 allowing or causing a chelate complex or coordination complex to form between the metal oxide and a ligand; and 
 allowing or causing the chelate or coordination complex to set. 
 
     
     
       2. The method of  claim 1 , wherein the metal oxide forms a chelate complex or coordination complex in the presence of the ligand. 
     
     
       3. The method of  claim 1 , wherein the metal oxide is the oxide or hydroxide of zinc, aluminum, calcium, tin, barium, or magnesium. 
     
     
       4. The method of  claim 1 , wherein the treatment fluid further comprises two or more metal oxides, wherein the two or more metal oxides are the same or different. 
     
     
       5. The method of  claim 1 , wherein the ligand has one available charge for creating a bond with an available charge of the metal oxide. 
     
     
       6. The method of  claim 5 , wherein the ligand is monodentate and forms a coordination complex with the metal oxide. 
     
     
       7. The method of  claim 1 , wherein the ligand has two or more available charges for creating bonds with two or more available charges of the metal oxide. 
     
     
       8. The method of  claim 7 , wherein the ligand is polydentate and forms a chelate complex with the metal oxide. 
     
     
       9. The method of  claim 1 , wherein the ligand comprises a functional group that has at least one available charge for bonding with the metal oxide. 
     
     
       10. The method of  claim 9 , wherein the functional group is selected from the group consisting of, a carboxylate, an amine, an alcohol, an ether, a phosphate, a thiol, a thiol ether, isocyanate, isothiocyanate, cyclopentadienide, elements, and combinations thereof. 
     
     
       11. The method of  claim 1 , wherein the ligand is naturally-occurring. 
     
     
       12. The method of  claim 11 , wherein the ligand is eugenol. 
     
     
       13. The method of  claim 1 , wherein the treatment fluid further comprises the ligand. 
     
     
       14. The method of  claim 1 , wherein the step of causing the chelate or coordination complex to form comprises introducing a second treatment fluid into the well, wherein the second treatment fluid includes the ligand. 
     
     
       15. The method of  claim 1 , wherein the chelate complex or coordination complex is malleable prior to setting. 
     
     
       16. The method of  claim 1 , further comprising allowing or causing two or more chelate complexes, coordination complexes, or both chelate complexes and coordination complexes to form between two or more metal oxides and two or more ligands. 
     
     
       17. The method of  claim 16 , wherein a complex network is formed between the two or more chelate complexes, coordination complexes, or both chelate complexes and coordination complexes. 
     
     
       18. The method of  claim 17 , wherein the complex network is formed by cross-linking the two or more chelate complexes, coordination complexes, or both chelate complexes and coordination complexes. 
     
     
       19. The method of  claim 18 , further comprising the step of introducing a cross-linking agent into the well, wherein the cross-linking agent comes in contact with the two or more chelate complexes, coordination complexes, or both chelate complexes and coordination complexes, and wherein the cross-linking agent forms the complex network. 
     
     
       20. The method of  claim 1 , wherein the chelate complex or coordination complex is a lost-circulation material, a binder for a lost-circulation material, a zonal isolation material, a binder for drill cuttings, a thermal insulator, a binder for a thermal insulator, a binder for proppant or gravel, a frac plug, a fluid-loss control material, a binder for a fluid-loss control material, or a sacrificial wear material. 
     
     
       21. The method of  claim 1 , further comprising the step of breaking the chelate complex or coordination complex, wherein the step of breaking is performed after the step of allowing or causing the chelate complex or coordination complex to set.